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Meaning of micron

mi•cron

Pronunciation: (mī'kron), [key]
— pl. -crons, -cra
  1. Also calledthe millionth part of a meter. Symbol: &mgr;, mu
  2. a colloidal particle whose diameter is between 0.2 and 10 microns.
  3. a very small unit of pressure, equal to that exerted by a column of mercury 1&mgr; high.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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